// Package constants define constant variable
package constants

const (
	// SubStartAction define the real time subscription start action
	SubStartAction string = "start"
	// SubStopAction define the real time subscription stop action
	SubStopAction string = "stop"
	// SubAppendAction define the real time subscription append action
	SubAppendAction string = "append"
)

// 定义状态常量
const (
	// SubSuccessCode define subscription success code
	SubSuccessCode = "1001"
	// SubSuccessCode define subscription failed code
	SubFailedCode = "1002"
	// CancelSubSuccessCode define cancel subscription success code
	CancelSubSuccessCode = "1005"
	// CancelSubFailedCode define cancel subscription failed code
	CancelSubFailedCode = "1006"
)

const (
	// SubSuccessMsg define subscription success message
	SubSuccessMsg = "subscription success"
	// SubFailedMsg define subscription failed message
	SubFailedMsg = "subscription failed"
	// CancelSubSuccessMsg define cancel subscription success message
	CancelSubSuccessMsg = "cancel subscription success"
	// CancelSubFailedMsg define cancel subscription failed message
	CancelSubFailedMsg = "cancel subscription failed"
)

// TargetOperationType define constant to the target operation type
type TargetOperationType int

const (
	// OpAppend define append new target to the subscription list
	OpAppend TargetOperationType = iota
	// OpRemove define remove exist target from the subscription list
	OpRemove
	// OpUpdate define update exist target from the subscription list
	OpUpdate
)

const (
	// NoticeChanCap define real time data notice channel capacity
	NoticeChanCap = 10000
)